User’s Manual Smart Digital Power Meter
Instruments.uni-trend.com
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Current
Range
Increasing
Irms exceeds the measuring range about 110 %( CF < 2 )
Current
Range
Decreasing
Irms is less than the lower part range about 60 %( CF < 2 )
Harmonic Analysis Times
1~50
Accuracy of Harmonic
±( 0.3% range +5% 1 character
）
Pre-heating Time
>30 minutes
Current Peak
The maximum display 24A
Maximum of Allowed Input for
Continuous
Voltage 700V
，
Current 24A
Maximum of Allowed Input for Instant
1000V, 40A (1 min)
Input Impedance
Voltage about 2 MΩ
，
Current is less than 0.02Ω
Upper/Lower limit
Four settings for the upper/lower limit of power and current
P Hi (Power high),
P Lo (Power low),
A Hi (Current high),
A Lo (Current low)
Average Function
√
Interface
RS232
（
DB9 ; 2 pin: TX, 3-pin: RX, 5-pin: GND
）
RS485 (DB9 ; 8-pin: A , 9-pin: B )
Baud Rate
4800
，
9600
，
19.2K
，
38.4K
，
57.6K
，
115.2K
，
default 9600.
It follows communication protocol of standard SCPI and Modbus-
RTU.
Display Hold
√
Mute
√
Lock Key
√
Power Source
Input power
：
AC 100V~240V Frequency 50/60Hz
